メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.847694808709 35.4103273078301, 136.846744435516 35.4102526796206, 136.846705288651 35.4102496187675, 136.846617528998 35.4109431839203, 136.843573969284 35.4106799683821, 136.843562068606 35.4099839565354, 136.843563627409 35.4092512213906, 136.843554531569 35.4085149359752, 136.843565134234 35.4083143323281, 136.843588641061 35.4078697512449, 136.846979996732 35.4081798694597, 136.848001952461 35.4082608180643, 136.847877017564 35.4091811118653, 136.847694808709 35.4103273078301)) ^^http://www.opengis.net/ont/geosparql#wktLiteral